19 Diagnostics library [diagnostics]

19.5 System error support [syserr]

19.5.6 Class system_error [syserr.syserr]

19.5.6.2 Class system_error members [syserr.syserr.members]

system_error(error_code ec, const string& what_arg);

1

Effects: Constructs an object of class system_error.

2

Postconditions: code() == ec.

string(what()).find(what_arg) != string::npos.

system_error(error_code ec, const char* what_arg);

3

Effects: Constructs an object of class system_error.

4

Postconditions: code() == ec.

string(what()).find(what_arg) != string::npos.

system_error(error_code ec);

5

Effects: Constructs an object of class system_error.

6

Postconditions: code() == ec.

system_error(int ev, const error_category& ecat, const string& what_arg);

7

Effects: Constructs an object of class system_error.

8

Postconditions: code() == error_code(ev, ecat).

string(what()).find(what_arg) != string::npos.

system_error(int ev, const error_category& ecat, const char* what_arg);

9

Effects: Constructs an object of class system_error.

10

Postconditions: code() == error_code(ev, ecat).

string(what()).find(what_arg) != string::npos.

system_error(int ev, const error_category& ecat);

11

Effects: Constructs an object of class system_error.

12

Postconditions: code() == error_code(ev, ecat).

const error_code& code() const noexcept;

13

Returns: ec or error_code(ev, ecat), from the constructor, as appropriate.

const char *what() const noexcept;

14

Returns: An ntbs incorporating the arguments supplied in the constructor.

[ Note: The returned NTBS might be the contents of what_arg + ": " + code.message(). — end note ]